Man is a vertebrate with phylum Chordata, family Hominidae, and order Primata. Housefly is an insect belonging to family Muscidae and order Diptera. Mango, a dicot plant, belongs to the order Sapindales. Wheat, a monocot, belongs to the order Poales. The correct mapping of A, B, C, and D is therefore Chordata, Muscidae, Sapindales, and Poales, respectively.